DGtal  1.0.0
freemanChainFromImage.cpp
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1 
39 #include "DGtal/base/Common.h"
41 #include "DGtal/helpers/StdDefs.h"
42 #include "ConfigExamples.h"
44 
46 #include "DGtal/io/readers/PGMReader.h"
47 #include "DGtal/images/imagesSetsUtils/SetFromImage.h"
49 
51 #include "DGtal/topology/helpers/Surfaces.h"
52 #include "DGtal/geometry/curves/FreemanChain.h"
54 
56 #include "DGtal/io/boards/Board2D.h"
57 #include "DGtal/io/colormaps/GradientColorMap.h"
58 #include "DGtal/io/Color.h"
59 
60 using namespace DGtal;
62 
63 int main()
64 {
65 
68  std::string filename = examplesPath + "samples/circleR10modif.pgm";
69  Image image = DGtal::PGMReader<Image>::importPGM(filename);
71 
73  Z2i::KSpace ks;
74  ks.init( image.domain().lowerBound(), image.domain().upperBound(), true );
76 
78  Z2i::DigitalSet set2d (image.domain());
81 
82 
84  Board2D aBoard;
85  aBoard << set2d;
86  aBoard << image.domain();
88 
90  SurfelAdjacency<2> sAdj( true );
92 
94  std::vector< std::vector< Z2i::Point > > vectContoursBdryPointels;
95  Surfaces<Z2i::KSpace>::extractAllPointContours4C( vectContoursBdryPointels,
96  ks, set2d, sAdj );
98 
99 
100  GradientColorMap<int> cmap_grad( 0, (int)vectContoursBdryPointels.size() );
101  cmap_grad.addColor( Color( 50, 50, 255 ) );
102  cmap_grad.addColor( Color( 255, 0, 0 ) );
103  cmap_grad.addColor( Color( 255, 255, 10 ) );
104  cmap_grad.addColor( Color( 25, 255, 255 ) );
105  cmap_grad.addColor( Color( 255, 25, 255 ) );
106  cmap_grad.addColor( Color( 25, 25, 25 ) );
107 
109  for(unsigned int i=0; i<vectContoursBdryPointels.size(); i++){
110  // Constructing and displaying FreemanChains from contours.
111  FreemanChain<Z2i::Integer> fc (vectContoursBdryPointels.at(i));
114  aBoard << SetMode( fc.className(), "InterGrid" );
115  aBoard<< CustomStyle( fc.className(),
116  new CustomColors( cmap_grad(i), Color::None ) );
117  aBoard << fc;
119  }
120 
121  aBoard.saveEPS("freemanChainFromImage.eps");
122  return 0;
123 }
Aim: This class template may be used to (linearly) convert scalar values in a given range into a colo...
Aim: implements association bewteen points lying in a digital domain and values.
Definition: Image.h:69
static void extractAllPointContours4C(std::vector< std::vector< Point > > &aVectPointContour2D, const KSpace &aKSpace, const PointPredicate &pp, const SurfelAdjacency< 2 > &aSAdj)
void addColor(const Color &color)
Aim: Represent adjacencies between surfel elements, telling if it follows an interior to exterior ord...
Custom style class redefining the pen color and the fill color. You may use Board2D::Color::None for ...
Definition: Board2D.h:278
static const Color None
Definition: Color.h:387
static ImageContainer importPGM(const std::string &aFilename, const Functor &aFunctor=Functor(), bool topbotomOrder=true)
bool init(const Point &lower, const Point &upper, bool isClosed)
Specifies the upper and lower bounds for the maximal cells in this space.
void saveEPS(const char *filename, PageSize size=Board::BoundingBox, double margin=10.0) const
Definition: Board.cpp:805
DGtal is the top-level namespace which contains all DGtal functions and types.
Aim: A wrapper class around a STL associative container for storing sets of digital points within som...
Aim: Define utilities to convert a digital set into an image.
Definition: SetFromImage.h:63
ImageContainerBySTLVector< Domain, Value > Image
int main()
[freemanChainFromImage-displayIncludes]
Modifier class in a Board2D stream. Useful to choose your own mode for a given class....
Definition: Board2D.h:247
Structure representing an RGB triple with alpha component.
Definition: Color.h:66
Aim: This class is a model of CCellularGridSpaceND. It represents the cubical grid as a cell complex,...
Aim: This class specializes a 'Board' class so as to display DGtal objects more naturally (with <<)....
Definition: Board2D.h:70